1389538 has 8 divisors (see below), whose sum is σ = 2091600. Its totient is φ = 692340.

The previous prime is 1389533. The next prime is 1389539. The reversal of 1389538 is 8359831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1389497 and 1389506.

It is not an unprimeable number, because it can be changed into a prime (1389533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388 + ... + 1711.

It is an arithmetic number, because the mean of its divisors is an integer number (261450).

2^1389538 is an apocalyptic number.

1389538 is a deficient number, since it is larger than the sum of its proper divisors (702062).

1389538 is a wasteful number, since it uses less digits than its factorization.

1389538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432.

The product of its digits is 25920, while the sum is 37.

The square root of 1389538 is about 1178.7866643290. The cubic root of 1389538 is about 111.5895370946.

The spelling of 1389538 in words is "one million, three hundred eighty-nine thousand, five hundred thirty-eight".